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    (Original post by Jodie_668)
    Yes because the triglycerides come from crops or waste vegetable oil
    thanks
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    Anyone want to do a good hour of shooting questions at each other to test all our knowledge?
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    (Original post by _HabibaH_)
    These OCR people are sneaky you know! They put it in a flow chart-y thing in the 2nd module on Page 62.
    Ah, thank you! I thought that flowchart summarised everything we'd learnt so far, maybe I should look at it a bit closer....
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    (Original post by MathsNerd1)
    Anyone want to do a good hour of shooting questions at each other to test all our knowledge?
    Okay!

    This is stretch and chanllege

    state the bond angle in R2C=NH
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    (Original post by mrmccarl)
    the byproduct is oh-.
    nope you don't...its only from primary alcohol to aldehyde you form water for the reasons which i have no idea.
    Okay cool well I shall remember that then
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    (Original post by otrivine)
    Okay!

    This is stretch and chanllege

    state the bond angle in R2C=NH
    120
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    (Original post by otrivine)
    Okay!

    This is stretch and chanllege

    state the bond angle in R2C=NH
    Which part as I'd say 120 degrees when it comes to the double bond but not sure which part you want.
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    (Original post by thers)
    Reaction 4 was just a alkali hydrolysis reaction. Didn't really have anything to do with azo dye formation.
    Oh! Thank you very much.

    Why was the mark scheme so particular about it being "hot aqueous NaOH". Why wouldn't just NaOH cut it?
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    Any tips on how to structure an answer using the evidence from carbon-13/H NMR to identify a structure? Thanks in advance
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    (Original post by Zzzyax)
    120
    correct

    my turn
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    (Original post by MathsNerd1)
    Which part as I'd say 120 degrees when it comes to the double bond but not sure which part you want.
    correct, all of it is 120 all the parts

    my turn
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    Can someone help me with identifying the number of chiral carbons because I know they are attached to 4 different groups but I can never seem to get the correct number of them.

    Q3bii
    Question paper: http://www.ocr.org.uk/Images/131288-...d-analysis.pdf
    Mark scheme: http://www.ocr.org.uk/Images/135165-...lysis-june.pdf

    Thank you
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    has anyone got the january 2013 paper please??
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    (Original post by Raafae)
    Oh! Thank you very much.

    Why was the mark scheme so particular about it being "hot aqueous NaOH". Why wouldn't just NaOH cut it?
    Because the mark scheme that year was more specific. OCR change the mark scheme each year for similar questions to stop people from memorizing mark schemes.
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    So.... What is the reagent and observation to distinguish between a ketone and an aldehyde?
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    (Original post by thers)
    Because the mark scheme that year was more specific. OCR change the mark scheme each year for similar questions to stop people from memorizing mark schemes.
    did you do the A* questions in the book?
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    (Original post by otrivine)
    correct, all of it is 120 all the parts

    my turn
    Define pharmalogical activity.
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    (Original post by otrivine)
    correct

    my turn
    will a phenol react with a carboxylic acid?
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    (Original post by otrivine)
    did you do the A* questions in the book?
    I've not used the textbook at all so no.
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    (Original post by MathsNerd1)
    Define pharmalogical activity.
    this is where there are 2 optical isomers and only of the isomers are more effective , have the pharmaological effect , the required effect while the other isomer may lead to adverse side effects
 
 
 
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